Impedance: 8 ohms
Woofer: 4 "(103mm) paper cone with rubber edge, KSV19mm,magnet70*15mm
Tweeter: 1" (25mm) silk or aluminum dome,NdFeB23*3mm
Sensititity(1w/1m): 88dB
Frequency Response: 90Hz-20KHz
Power(RMS):20W
Over Dimension(H*W*D):  202*136*123 mm
Switch Transformer: 10W-5W-2.5W/100V
Colur: white/black